You can help cool down or warm up your room, depending on what time of year it is by filling up old mason jars with water and placing them in front of a window. The water in the jars helps to keep the heat out in the summer and also helps to keep the cold out in the winter. A less expensive form of insulation and it can save you money on your electric bill.
When doing this, do I add water to a mason jar, full half full? Do I then put on the lid to help it from getting knocked over or is it to sit open? Can you explain the way this works? Is the water in the jar actually taking on the temp. that is trying to come in the house therefore keeping it from changing the temp in the house? Thanks a bunch!!
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